Bin conveyer



man. M. m.

H. C. CARTER BIN CONVEYER Filed Sept.1V 18, 1954 2 Sheets-Sheet l s ff H. C. CARTR TTUf-M/E-V mm.. Mi, H936. H, Q CARTER g@ BIN CONVEYER Filed Sept. 18, 1954 2 Shfeeo's--Shee'l 2 /AMEA/TDR" H. c.. CARTER 'rattled .aa la ic lliilihi tliIlNtflEWlElll,

Haskell l). ilarter, Fortland, ilreg., signor to llron Fireman Manufacturing ilompany, Fortland, lli-eg.

ilpplication September it, 1934i, Serial No. liidlil i lilla.

This invention relates generally to underfeed stokers, and particularly to bin conveyers to .be used in connection therewith.

The main object of this invent/ion is the provision of an exceedingly simple and emcient form of conveyer which is so constructed as to make it extremely flexible as far as adapting itself to installation requirements is concerned.

The second object is the provision of a bin conveyer whereby coal may be conveniently transported from a storage bin `to the fuel Vleeding mechanism of an underfeed stoker. l

I accomplish these objects in the manner lset forth in the following specification as illustrated l in the accompanying drawings, in which:

Fig. 1 is a plan of the device showing the bin walls broken away in a horizontal section. l

Fig. 2 is a vertical section taken along the line i-i in Fig. l.

Fig. 3 is a vertical section taken t--i in Fig. l.

Fig. i is avertical section taken along the line lllll in Fig. l.

Fig. 5 is a vertical section talren along the line mi t--F in Fig. l.

Fig. 6 is a section taken along the line t-t in Fig. 3.

Similar numbers of reference refer to similar parts throughout the several views.

Referring in detail to the drawings, there is shown a portion of a retort it whose coal tube l l is 'joined byr means of a flange it to a trough l t, which is connected by a flange lll to a transmission case it on which is mounted a driving motor Jit. The motor lt drives the coal feeding Wo lili and also drives the fan within the casing ll.

along the line dll Over the trough it is placed a cover plate l having a circular opening lt' formed therein into which projects the lower end it of an inclined tubular neck il provided at its upper end with a tubular head il, the axis of which is normal to the axis of the neck il. 'Attached toone side of the head il is a gear box 2t in which journals the shaft it of the gear it and the shai't it whose pinion il meshes with the gear tti.

integral with the pinion il is 'a pinion il which meshes with a gear i@ on the horizontal shaft it on the outer end of which is attached the sprocket il. The shaft ill journals in the horizontal portion il of the gear box lit. The portion tl is rotatable with relation to the box ifi at thelflanged joint it along the axis of the shaft it. The member il is supported from the cover plate lll by means of an upright rod 3i. Motion is supplied to the sprocket il through the chain it from the (ci. ita-tl) sprocket wheel it on the counter shaft il, on which is secured a gear it which is driven irom the transmission it.

The neck 22 is provided with a flange it which is held in place in relation to the cover plate it 5 by means of the bolts lll. It will be observed that the axis il of the shaft 2t coincides with the axis of the opening i9.

The shaft 2t is joined by a universal joint il to an inclined coal conveying Worm t3 which is co- 10 axial with the head 2t and extends into the coal tube ttwhich is joined to the head lt by means of a bell end it to which it is attached by means of a screw it. The coal tube il is joined by means of a flange il to a split angular connection tt, the edges of which are joined by means of the bolts tt. The interior 5t of the members lt is somewhat enlarged midway between the ends thereof to provide the necessary clearance and to permit the worm llt to assume an angular relationship to the worm 5l to which it is attached by means of the universal joint lil.

The worm tl extends through the horizontal coal tube it, whichis attached to the members it, and also projects through the clean out box 2d tt to which it is attached by means of the flanges tt. The clean out box tti is provided with a re-n movable V-shaped section tt, which is held in position by means of the bolts tl and it, the latter of which secure the clean out box til to the coal bin wall ti.

The portion 'tt of the underside ci they clean out box til extends through the wall it into the coal bin tl. 'l'he edge tl of the portion tt is formed spirally lor reasons which will be explained later. The portion tt of the worm al is preferably of a reduced diameter and is sup ported at its farther most end ttl by means oi a tubular bearing tt, which is mounted on the coal bin wall tt. The portion ofthe worm tl whichl 40 is almost as large as the interior oi the tube tft extends a short distance into the bin tl.

The purpose of reducing the diameter of the worm portion tilv is to avoid placing an objectionable load on the driving mechanism by conveying more coal to the inlet of the clean out box lill than can be carried into same by the worm tl. The purpose of inclining the ed'ge tt is to encourage the movement ofthe stones and tramp metal toward the upper edge tl where they will either enter the coal `tube or jam at a point which is easily accessible when the section tt is removed and without the necessity of taking out a lot of coal from the bin tl.

llt may be seen from the torego that with te the arrangement herein described the 'neck 2l may be turned at any desired angle with relation to the trough i3 causing the device to lend itself to a wide range of installation requirements.

I claim:

1. A bin conveyer having in combination a trough, an inclined neck mounted over said trough and communicating therewith, a coal feeding worm within said trough, a tube com,- municating with the upper end of said neck, a worm within said tube, a driving connection on the upper side of said neck for rotating said last mentioned worm and a hinged joint for said driving connection coaxial with the lower end of said neck whereby said tube can be selectively fixed with relation to said trough. l

2. A bin conveyer having in combination a horizontal trough, a coal feeding Worm disposed within said trough having means for rotating same for the purpose of conveying fuel from said trough to a stoker retort, a sloping fuel conveying worm having its upper discharge end disposed above said trough, an inclined neck communicating between the upper end of said worm and said trough, gearing on the upper side of said neck for driving said fuel conveying worm,

aparece eating with the bin and having a worm therein I extending into said bin, a sloping coal tube disposed above said horizontal coal tube, an inclined neck communicating between the upper end of said sloping coal tube and Ythe horizontal coal tube,.a worm within said sloping coal tube and a drive gear on the upper side of said neck having a vertical pivotal axis passing downwardly through the junction of said neck and the horizontal coal tube, said neck and horizontal coal tube being capable of a limited relative rotation.

4. A bin conveyer having a coal feeding worm enclosed within a coal tube and having a clean out box forming a portion of the coal tube communicating with a coal bin and having the lowermost portion of the communicating end projecting into said bin, said projecting end being formed spirally with its longest end terminating in a horizontal edge near the middle of the Worm height.

HASKELL C. CARTER. 

